Which equation represents positron decay?

Answer:

For 2: The % yield of the product is 92.34 %

For 3: 12.208 L of carbon dioxide will be formed.

Explanation:

The percent yield of a reaction is calculated by using an equation:

[tex]\% \text{yield}=\frac{\text{Actual value}}{\text{Theoretical value}}\times 100[/tex]              ......(1)

Given values:

Actual value of the product = 78.4 g

Theoretical value of the product = 84.9 g

Plugging values in equation 1:

[tex]\% \text{yield}=\frac{78.4 g}{84.9g}\times 100\\\\\% \text{yield}=92.34\%[/tex]

Hence, the % yield of the product is 92.34 %

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(2)

Given mass of carbon dioxide = 24 g

Molar mass of carbon dioxide = 44 g/mol

Plugging values in equation 1:

[tex]\text{Moles of carbon dioxide}=\frac{24g}{44g/mol}=0.545 mol[/tex]

At STP conditions:

1 mole of a gas occupies 22.4 L of volume

So, 0.545 moles of carbon dioxide will occupy = [tex]\frac{22.4L}{1mol}\times 0.545mol=12.208L[/tex] of volume

Hence, 12.208 L of carbon dioxide will be formed.

Answer:

The Aufbau Principle

Explanation:

In the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy level before occupying higher-energy levels.

Answer:

Aufbau principle

Explanation:

edge 2021

Answer:

Zinc oxide is a metal oxide the term best describes the nature of zinc oxide is an amphoteric oxide.

Explanation:

Please Mark me brainlist

Answer:

50.28 grams

Explanation:

hope this helps

Answer:

The two hydrogen atoms and one oxygen atom within water molecules (H2O) form polar covalent bonds. ... As a result of water's polarity, each water molecule attracts other water molecules because of the opposite charges between them, forming hydrogen bonds.

Explanation:

Not my work, but I hope this helps!

Answer:

TRUE!!!!

Explanation:

Water can act as both an acid and a base in solution and undergoes autoionization, where it can be both an acid and a base to itself. When mixed with an acid, water accepts hydrogen ions and acts as a base. However, when water is mixed with a base, it donates hydrogen ions and acts like an acid.

Not my words! I hope this helps :)

Answer:1. Ethanol + Dioxygen = Carbon Dioxide + Water

Explanation:

Answer:

astrioids can be found at the astrioid belt

Answer:

Composition. Most of the asteroids in the Main Belt are made of rock and stone, but a small portion of them contain iron and nickel metals. The remaining asteroids are made up of a mix of these, along with carbon-rich materials. Some of the more distant asteroids tend to contain more ices

Answer:

O-H F-H N-Hy

Explanation:

C-H N-H O-H F-H

Answer:

C this is C.Sea breeze according to the photo.

Answer:

Nuclear fission is used to produce electrical power.

Explanation:

Both types of nuclear reaction require high temperatures

Answer:

D

Explanation:

Answer:

Tetrahedral, sp3, p

Explanation:

C has 4 bonds and hence its tetrahedral shape with 109.5 degrees. since there are 4 bonds, it is sp3

Answer:

A carbon atom that is surrounded by four hydrogen atoms has a

✔ tetrahedral

molecular geometry.

This geometry results from the arrangement of the

✔ four sp3

hybrid orbitals around the carbon atom.

They are formed when the s-orbital and

✔ three p

-orbitals mix, or hybridize.

Explanation:

Answer:

Explanation:

CaCO3 = 1*Ca + 1*C + 3*O

              =1*40 + 1*12 + 3*16

               =40 + 12 + 48

               =100 amu

Answer:

Geothermal energy is basically the thermal energy generated and stored in the Earth. It is the energy that determines the temperature of matter.

Explanation:

I hope this helped :)

Answer:

Geothermal energy is heat that's inside of the ground. It is a renewable energy source because heat is constantly being produced inside of the earth.

Explanation:  Hope this helps! :)

Answer:

The empirical formula is Ag2O.

The empirical formula is Ag2O.Explanation:

The empirical formula is Ag2O.Explanation:The empirical formula is the simplest whole-number ratio of atoms in a compound.

The empirical formula is Ag2O.Explanation:The empirical formula is the simplest whole-number ratio of atoms in a compound.The ratio of atoms is the same as the ratio of moles. So our job is to calculate the molar ratio of Ag to 2O.

do the steps ...

To get this into an integer ratio, we divide both numbers by the smaller value.

From this point on, I like to summarize the calculations in a table.

ElementAgMass/gXMolesXllRatiomllIntegers

mAgXXXm7.96Xm0.07377Xll2.00mmm2

mlOXXXXl0.59mm0.0369Xml1mmmml1

There are 2 mol of Ag for 1 mol of O.

Answer:

Hello There!!

Explanation:

The answer is↬The empirical formula is Ag2O. It is the simplest whole-number ratio of atoms in a compound.

hope this helps,have a great day!!

~Pinky~

The salt produced in the neutralization reaction between NH₄OH and HNO₃ is NH₄NO₃ (ammonium nitrate).

A neutralization reaction is a reaction between an acid and a base to form salt and water. The cation of the salt will come from the base while its anion will come from the acid.

Let's consider the neutralization reaction between NH₄OH and HNO₃. The formed salt will be ammonium nitrate.

NH₄OH + HNO₃ ⇒ NH₄NO₃ + H₂O

The salt produced in the neutralization reaction between NH₄OH and HNO₃ is NH₄NO₃ (ammonium nitrate).

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Answer:

slope = 3

Explanation:

[tex]slope = \frac{3 - 0}{1 - 0} \\ = 3[/tex]

Answer:

Just add a plenty of dots in the first one and very few dots in the second one

An area with high population density will have many dots while areas will low population density will have few dots when using dots to illustrate population density.

Population density is the ratio of the total number of organisms found in a given area to the total of the area of that place or habitat.

An area with high population density indicates that more organised ate found per unit area than an area with low population density.

Therefore, using dots to illustrate population density, an area with high population density will have plenty dots while areas will low population density will have few dots scattered over.

Learn more about population density at: https://brainly.com/question/13902749

Answer:

0.48

Explanation:

[tex]i = \frac{v}{r} [/tex]

because we are looking for I which is current we say

I = 12÷25 which is 0.48.

The current flowing through the resistor is 0.48 A.

The resistor is a length of wire which resists the flow of current.

According to Ohm's law, the potential difference is proportional to the current flowing in the circuit.

V =I R   where R is the resistance.

Given is the resistance of resistor R = 25Ω and the voltage drop V =12 Volt, then the current through the resistor will be

I =V/R

I = 12/25

I =0.48 A

Thus, the current in resistor is 0.48 Amperes.

Learn more about resistor.

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Answer:

Mg is the limiting reactant

The theoretical yield is 105.2 g of Mg3N2

Explanation:

3Mg(s) + N2(g) -----> Mg3N2(s)

Number of moles of Mg = 75g/24g/mol = 3.125 moles

3 moles of Mg yields 1 mole of Mg3N2

3.125 moles of Mg yields 3.125 × 1/3 = 1.042 moles of Mg3N2

Number of moles of N2 = 45g/28g/mol = 1.607 moles

1 mole of N2 yields 1 mole of Mg3N2

1.607 moles of N2 yields 1.607 moles Mg3N2

Hence, Mg is the limiting reactant

The theoretical yield of Mg3N2 = 1.042 moles of Mg3N2 × 101 g/mol = 105.2 g of Mg3N2

Answer:

Key Concepts

The hydrogen ion concentration in a solution, [H+], in mol L-1, can be calculated if the pH of the solution is known.

pH is defined as the negative logarithm (to base 10) of the hydrogen ion concentration in mol L-1 pH = -log10[H+] ...

[H+] in mol L-1 can be calculated using the equation (formula): [H+] = 10-pH

More items...

Explanation:

Answer:

[tex]pH = - log[H {}^{ + } ] \\ 6.5 = - log[H {}^{ + } ] \\ [H {}^{ + } ] = {10}^{ - 6.5} \\ [H {}^{ + } ] = 3.16 \times {10}^{ - 7} \: mol {dm}^{ - 3} [/tex]

Answer:

1.115 g

Explanation:

Applying,

R = R'[tex]2^{n/t}[/tex]................... Equation 1

Where R = original sample of radon-222, R' = sample of radon-222 left after decay, n = Total time, t = half-life.

make R' the subject of the equation

R' = R/([tex]2^{n/t}[/tex])............... Equation 2

From the question,

Given: R = 73.9 g, n = 23 days, t = 3.8 days.

Substitute these values into equation 2

R' = 73.9/([tex]2^{23/3.8}[/tex])

R' = 73.9/[tex]2^{6.05}[/tex]

R' = 1.115 g

Answer:

Percent Yield = 80%

Explanation:

Percent yield of a reaction is defined as one hundred times the ratio between the actual yield and the theoretical yield. That is:

Percent yield = Actual Yield / Theoretical Yield * 100

Where theoretical yield of CaHPO4 is 10g and actual yield is 8g

Replacing:

Percent yield = 8g / 10g * 100

Answer:

unable to compute

Explanation: